Grinding device



F. SPANGLER GRINDING DEVICE Filed Sept. 25, 1933 2 Sheets-Sheet 1 Oct- 6, 1925- F. SPANGLER GRINDING DEVICE Filed 50 2 Sheets-Sheet 2 ,l'. S a/160 6 as. will be hereinafter Patented Oct. 6, 1925.

time SPANGLER, or MLIDWAY, isconsin.

orniivnine.:iinvfon. l,

Application filed September'25, 1923; Serial No. 6645754;

To-aZZ 7].710772- it mayconcern:

Be it known that I, Fnnn SPANGLER, citizen of the United States of America, residing at hlidway, in the county of La Crosse and State ofv lVisconsin, have invented cer tain new and useful Improvements in Grinding Devices, of which the following is a specification. a

T he present invention relates to grindingdevice particularly adapted to be mounted upon a silo-filler or other light machinery for'the purpose of sharpening the cutting knives thereof. p A

Qhe principal object of the invention is to provide a grinding device which issiinple and efficient in structure, revolvable in operation, comparatively inexpensive to manufacture, durable, easy of manipulation, and well adapted'to the purpose for which it is designed.

With the above and numerous other objects-in view as will appear as the description progresses, theinvention resides in certain novel features of construction, and in the combination and arrangement of parts more fully described and claimed. V In the-drawing: a Figure 1 is a front elevation of the device enibodying my invention, 7

' Figure 2 is atop plan. view -thereof,

ure 3 is a side elevation thereof, Figure lis avertical section.thereth-rough, and v Figure 5 is a detail perspective view of the operating arm'forthe grinding wheel.

Referring to the drawing in detail, it will be seen that the device includes a frame possessed of two inverted U-shaped sides which are connected at their intermediate or proper portion by a rod 6. These inverted U-shaped sides are securely fastened tothe beams 7 which are provided with suitable brackets so that the device may be readily attached to a silo-filler or some other suitable or desired machinery. A journal box 9 is associated with each of the sides 5.

Each journal box includes a block 10 hav-.

of theside adjacent its intermediate or top portion. A thumb screw is threadedly engaged with the steinabo-ve the bracket'l l and thus the journal box may be raised or lowered as desired. An extensible coil spring 16 is disposed about the stem between the bracket 14 and the extension 12 nor mally holding the journal box at its down most position so that the nut 15 is resting on the-bracket 14:. This spring also tensions the grinding device against the blades which it is sharpening as will be more evident as the descriptionprogresses.

A-shaft1'7 is journaledin the boxes9 and terminates atone end in a pulley 18. The portion of the shaftl'? between the sides 5 is provided with a longitudinally extending key 18. A grinding element is mounted on this shaft 17 and includes a sleeve or tubular member 19 having a grindingi wheel 20- thereon preferably formed of emery. The

sleeve or tubular member 19 will rotate with the shaft 17 becauseof the key 18,"and-this sleeve or tubular member may be moved longitudinally on the shaft. Thewheel 20 is suitably fixed to the tubular member 19 so as to rotate therewith.

forwardly ofthe latter. An arm 23 is provided. with a sleeve 24 intermediate its ends advantage in Figure at and said forked end engages an annular groove 25 provided in the sleeve or tubular member 19' and thus this tubular member and its grinding wheel may be readily moved across the device or longitudinally of the shaft 17 as is desired during the operation of the grinding Wheel.

A belt 27 is trained overthe pulley 18 and also over another power wheel 28 which may be driven from any part of the silofiller or other machinery upon which the device is being used. An idler 29 is mounted on an arm 30 and a spring 31 holds it in engagement with the belt 27. It is thought that the construction and operation of the invention should now be understood without a more specific description thereof. It is,

- however, desired to point out that numerous changes in the details of construction, materials, and inthe combination and arrangement of parts may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

V rod- 22 ex-v tei'i'ds between the beams 7 and. sides 5 but.

Having thus described my invention, What I claim as new is 1. In a grinding device of the class described, a frame including a pair of inverted U-shaped sides, journals slidable in the sides, a shaft in the journals, means for retating the shaft, and a grinding wheel rotatable by the shaft and slidable longitudinally thereof.

2. In a grinding device of the class de scribed, a frame, a shaft in the frame, a sleeve rotatable with the shaft and slidable thereon and provided with an annular groove, a grinding wheel fixed to the sleeve, a rod mounted in the frame parallel with the shaft, and an arm including a sleeve disposed intermediately thereof receivable on the rod and a bifurcated end receivable in the annular groove of the sleeve whereby the grinding wheel may be moved longitudinally of the shaft all in the manner and for the purpose specified.

3. In a grinding device of the class de scribed, a frame, journal boxes slidable in the frame, a shaft in the journal boxes, a grinding wheel on the shaft, brackets on the frame, stems extending from the journals through the brackets, nuts threaded upon the stems above the brackets and springs disposed about the stems between the journals and the brackets for tensioning purposes all in the manner and for the purpose specified.

4. A grinding device of the class described, a frame including a pair of inverted U-shaped sides, each side including a pair of upright rails and an intermediate curved portion, journals provided with side grooves for receiving the upright rails on the U-shaped sides of the frame and slidably mounted therein, a shaft in the journals, means for rotating the shaft, and a grinder wheel rotatable on the shaft and slidably longitudinally thereof.

5. A grinding device of the class described, a frame including a pair of inverted U-shaped sides, each side including a pair of upright rails and an intermediate curved portion, journals provided with side grooves for receiving the upright rails of the U-shaped sides and slidably mounted therebetween, a shaft in said journals, a grinding wheel on the shaft, means for rotating the shaft, and means associated with the slidably mounted journals for holding the grinding wheel against an object.

6. In a grinding device of the class described, a frame including a pair of invert ed U-shaped sides, each side including a pair of spaced uprights and an intermediate connecting portion at their top ends, journals provided with grooves in their sides for receiving the uprights so as to be slidably mounted in the sides, a shaft mounted in the wheels, a grinding wheel on the shaft, brackets extending from the uprights, stems piercing the brackets and extending therebelow and attached to the journals, and nuts threaded on the upper end of the stems.

7. In a grinding device, a frame including a pair of inverted U-shaped sides, each side including a pair of uprights, and an intermediate connecting portion at their top ends, journals provided with grooves in their sides for receiving the uprights so as tobe slidably mounted in the sides, a shaft mounted in the journals, a grinding wheel on the shaft, brackets extending from the uprights, stems piercing the brackets and connected to the journals, threads on the stems above the brackets, springs disposed about the stems between the journals and the brackets for normally holding the journals in their downmost position and nuts on the threads of the stem above the brackets.

In testimony whereof I aflix my signature.

FRED SPANGLER. I 

